Let's get more from "gma" legal analyst dan abrams. What a crucial decision to go on that stand. And this testimony is going to be make-or-break to some degree. The jurors will be watching what he says and how he says it. They're going to be looking at his eyes and his body language. His credibility is this case. She's already testified. The jurors have watched her testimony. They've heard her testimon they've heard her account. Now, this is his opportunity to get up there and say something very different than what they previously heard. Exactly how he says this becomes crucial. All he has to do is plant a seed of doubt. That's the problem for prosecutors here, right? If these jurors believe it's more likely than not that she was raped, that's a not guilty verdict. There has to be proof beyond a reasonable doubt. That's a high standard, particularly in a case like this, where you have her account and his account. And you have dueling medical experts, et cetera. Prosecutors have the enormous burden. That's why this is such a tough case. See how he handles cross-examination. Back on the stand tomorrow. The direct examination I the easy part. The harder part is when he's cross-examined.

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